Year	US Dollars adjusted for inflation)
1960	2244.44638
1961	2215.09177
1962	2250.61394
1963	2271.3713
1964	2378.82512
1965	2419.57711
1966	2341.96732
1967	2379.59523
1968	2355.2763
1969	2394.65861
1970	2486.44241
1971	2568.33611
1972	2621.73788
1973	2904.70996
1974	3141.76575
1975	3392.08785
1976	3545.57728
1977	3507.29695
1978	3610.64031
1979	3648.75353
1980	3687.39406
1981	3795.97112
1982	3723.86298
1983	3619.34721
1984	3622.79217
1985	3672.84767
1986	3707.10753
1987	3607.54707
1988	3727.85473
1989	3675.45432
1990	3720.93663
1991	3790.50881
1992	3782.18856
1993	3770.34631
1994	3844.78444
1995	3847.50729
1996	3832.76269
1997	3917.656
1998	3966.17349
1999	3706.64978
2000	3678.90232
2001	3759.89486
2002	3848.26685
2003	3888.3419
2004	4139.08057
2005	4286.51525
2006	4400.8596
2007	4421.90243
2008	4624.19658
2009	4573.24708
2010	4657.30236
2011	4943.4227
2012	5140.26291
2013	5311.21212
2014	5428.71403
2015	5352.87646
2016	5191.09956
2017	5269.61757